I travelled solo to Bkk for medical check-up and stayed in one of the rooms (Happy Bangkok) on the 4th floor for 4 nights 5 days. Jah is a very helpful & responsive host. She tried to get a certain thing I needed while staying there. Once it could not be fulfilled, she helped figuring out other ways. Appreciate ka!
Her place is easy to find & located in a walking-distance to BTS & foodies are around. There are 2 rooms on each floor (2nd-4th); they're stylish with cool paintings! Most importantly, it's not bunkbed! I LIKE this private-room concept; that makes this guesthouse not crowded with backpackers while its price per night is affordable :) Also, it's quiet to sleep as well as comfortable & clean in the room.